30°-40°
40°-50°
50°-60°
60°-70°
✅ The correct answer is option A.
Mechanical Engineering MCQs
Wrought iron
is a ductile material
can be easily forged or welded
cannot stand sudden and excessive shocks
all of these
✅ The correct answer is option D.
The plunge grinding requires very __________ speed.
high
low
✅ The correct answer is option B.
The amount of heat given out by the complete combustion of 1 kg of fuel is known as calorific value of solid or liquid fuel.
TRUE
FALSE
✅ The correct answer is option A.
Poisson’s ratio is the ratio of linear stein to the volumetric strain.
TRUE
FALSE
✅ The correct answer is option B.
A plate with a circular hole in the centre is subjected to a pull of P. The maximum stress induced at the edge of the hole is three times of the nominal stress.
Correct
Incorrect
✅ The correct answer is option A.
If percentage elongation of a certain specimen made of a material ‘A’ under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material ‘B’ is 40%, then material ‘B’ is more ductile than material ‘A’.
Correct
Incorrect
✅ The correct answer is option A.
The maximum shear stress, in the given figure, is equal to __________ of the Mohr’s circle.
radius
diameter
circumference
area
✅ The correct answer is option A.
In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
5°
6°
8°
10°
✅ The correct answer is option B.